package com.hongtech.modules.generator.service;

import com.hongtech.common.util.GenUtils;
import com.hongtech.modules.generator.mapper.GeneratorMapper;
import java.io.ByteArrayOutputStream;
import java.util.List;
import java.util.Map;
import java.util.zip.ZipOutputStream;

import com.hongtech.modules.generator.vo.TableListVO;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * 代码生成器
 */
@Service
public class SysGeneratorService {

    @Autowired
    private GeneratorMapper generatorMapper;

    public List<TableListVO> queryList(String tableName) {
        return generatorMapper.queryList(tableName);
    }

    public Map<String, String> queryTable(String tableName) {
        return generatorMapper.queryTable(tableName);
    }

    public List<Map<String, String>> queryColumns(String tableName) {
        return generatorMapper.queryColumns(tableName);
    }

    public byte[] generatorCode(String[] tableNames) {
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        ZipOutputStream zip = new ZipOutputStream(outputStream);
        for (String tableName : tableNames) {
            // 查询表信息
            Map<String, String> table = queryTable(tableName);
            // 查询列信息
            List<Map<String, String>> columns = queryColumns(tableName);
            // 生成代码
            GenUtils.generatorCode(table, columns, zip);
        }
        IOUtils.closeQuietly(zip);
        return outputStream.toByteArray();
    }
}
